Hello
We use magento 1.9 and openerp 7, for connect them, we use magento openerp bridge by Webkul.
But we have 2 problems
1- the VAT on shipping cost are not sync on Openerp but on magento Vat is good.
2- some order (who come on one marketplace) are not sync on openerp. We need to fix it and if its possible sync a past order of this marketplace
thank you